An undiscussed topic about Maker

How are the costs of making High grade Dex Crystals affected by not bothering to assess the low-grades? I thought of this later...

74% LQ -> ~7% MQ - costs 480k each
25% MQ -> more than 3 times as many MQs

Also, break-down of number of LQ to get MQs:
60% - 10 (300k)
24% - 11 (600k)
9.6% - 12 (900k)
3.84% - 13 (1.2m)
1.536% - 14 (1.5m)
(1%) - 15+ (1.8m+)
Average: 10.5 LQ per MQ, 480,000 mesos.

This makes the 74% -> 7.04% assumption more clearly accurate.

Now I think about it, this could also be taken as a geometric series, a = 0.6, r = 0.4.